socks just what have you talked to me about that was wrong?

 

According to that, pressure at the turbo is 1.0 bar (14.50 psi), but Manifold Absolute Pressure (what the engine sees after the intercooler and piping losses) is at 0.4 bar (5.80 psi) . The range, however, seems to go as high as 1.2 bar (17.40 psi). Whether this is the maximum the engine sees or the maximum for the sensor is unknown, but I'm guessing it's actually the sensor range.

 

There are 2 map sensors on the gen coupe. 1 on the surge tank and 1 on the IC outlet pipe.

 

It's not the Hyundai techs that are talking about 3psi, it's Hyundai themselves saying that to their employees ... then said employees relaying the info, 3 different tech that I know took the "Hyundai Genesis Coupe" course from Hyundai and they were all told the same thing : 3 PSI!

But I agree that 3 PSI sound extremely low for 210BHP on a 2.0l.

 

Correct. According to the chart you posted, the one in the "surge tank" or intake manifold is showing 0.4 bar (5.80 psi).

 

I'm sure it's posted on one of the Korean sites. SFR and Kspec both got one, maybe they know?

 

cobra: You are also looking at the number displaying the current reading. The spikes are recorded as the max pressure of 1.2bar at the mani, and 1.5bar at the turbo. Those would be the numbers to go by. I don't believe they are the range of the sensor, you can follow the blips and see that is what was touched.

1.2Bar = 17
1.5Bar = 21

 

You're right. I just noticed there are numbers on the left side also. The numbers on the left are the range of the graph (probably the sensor range). The numbers on the right are the range for the test.

BTW, 1.2bar = 17.4psi, 1.5bar = 21.76psi (closer to 22psi than 21psi).

 

I was talking about that on a local forum and Denisst pointed the obvious : those graphics are absolute, so you have to subtract the atmospheric pressure.

17.5 - 14.7 = 2.8 PSI ... looks like it IS low-pressure and it's what Hyundai is telling their tech. wink1.gif

The only problem is the charge piping that looks quite inefficient, loosing 4 PSI is enormous!

Anyway, at 17 PSI the car would make around 275 HP

 

That would make sense. Surprised I didn't notice it... the turbo outlet sensor never sees vacuum, so the minimum pressure is 1.0bar at idle (atmospheric). The sensor in the manifold is registering 0.2bar at idle because it does see vacuum. On a boost gauge, the manifold would be showing -0.8bar at idle. So, max at the turbo outlet is 0.5bar (7.25psi), 0.2bar (2.9psi) at the manifold. So, looks like the previous post stating 3psi was the max was correct. This is actually great news. A simple re-flash and a manual boost controller (plus the usual intake, DP and exhaust) should be good for close to 300hp at the crank without breaking open the motor (assuming Hyundai didn't cheap out on the fuel pump and injectors).